News Main Animals Archaeology Dinosaurs Earth History Human Animal Space Tech   Laurence G. Miller and Shaun Baesman |   Mono Lake Morning at Mono Lake, Calif. A microbial community thriving in the hot springs there uses arsenic -- a mineral best known for its toxic properties to other forms of life -- instead of oxygen for photosynthesis, researchers report. The finding strengthens the theory that this strange quality allowed photosynthesis to evolve during the oxygen-free conditions of the early Earth.   « back to article

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